Full path :

/usr/local/share/afterstep/desktop/cursors/cursor.xbm

#define cursor_width 16
#define cursor_height 16
#define cursor_x_hot 1
#define cursor_y_hot 1
static unsigned char cursor_bits[] = {
   0x03, 0x00, 0x0d, 0x00, 0x32, 0x00, 0xc6, 0x00, 0x0c, 0x03, 0x14, 0x0c,
   0x28, 0x30, 0x58, 0xc0, 0xb0, 0x80, 0x50, 0x41, 0xa0, 0x22, 0x60, 0x45,
   0xc0, 0x8a, 0x40, 0x55, 0x80, 0x2a, 0x80, 0x11};